TPS65261: Three output recommendation

James Zhan

Expert 4365 points

Part Number: TPS65261
Other Parts Discussed in Thread: TPS65262

Hi team,

My customer need to design a 12V input, three output: 4V/2.8A, 3.3V/100mA, 5V/100mA circuit.

I've recommended the TPS65261, but they think this part has to many PINs(32 QFN) and they need a simpler solution.

Maybe one buck for 4V, two LDO for 3.3V and 5V would be better.

Please let me know if you have any advice, thanks!

James

over 4 years ago

0 Zhao Ma over 4 years ago

TI__Genius 15135 points

Hi, James

I afraid there is no such devices including 1 buck + 2 LDOs.

TPS65262 has 3 bucks + 2 LDOs, if no use 2 bucks, you can pull EN2=EN3=low and floating other pins.

0 JohnTucker over 4 years ago in reply to Zhao Ma

TI__Guru**** 191445 points

And if you wanted use a single buck and two LDOs, the buck would have to be 12 to 5 V and use the LDO for 4 and 3,3 V. I think the larger pin count ripple output is a better choice. for this app. You could possibly consider 12 V to 4 V buck wit 3,3 V loo and a 5 V boost.

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TPS65261: Three output recommendation